diff --git a/OpenCL/m00500.cl b/OpenCL/m00500.cl
index 2c1df0ac8..c1cc603fe 100644
--- a/OpenCL/m00500.cl
+++ b/OpenCL/m00500.cl
@@ -16,7 +16,7 @@
 
 #define md5crypt_magic 0x00243124u
 
-void md5_transform (const u32 w0[4], const u32 w1[4], const u32 w2[4], const u32 w3[4], u32 digest[4])
+static void md5_transform (const u32 w0[4], const u32 w1[4], const u32 w2[4], const u32 w3[4], u32 digest[4])
 {
   u32 a = digest[0];
   u32 b = digest[1];
@@ -114,7 +114,7 @@ void md5_transform (const u32 w0[4], const u32 w1[4], const u32 w2[4], const u32
   digest[3] += d;
 }
 
-void memcat16 (u32 block0[4], u32 block1[4], u32 block2[4], u32 block3[4], const u32 block_len, const u32 append[4])
+static void memcat16 (u32 block0[4], u32 block1[4], u32 block2[4], u32 block3[4], const u32 block_len, const u32 append[4])
 {
   u32 tmp0;
   u32 tmp1;
@@ -226,7 +226,7 @@ void memcat16 (u32 block0[4], u32 block1[4], u32 block2[4], u32 block3[4], const
   }
 }
 
-void memcat16_x80 (u32 block0[4], u32 block1[4], u32 block2[4], u32 block3[4], const u32 block_len, const u32 append[4])
+static void memcat16_x80 (u32 block0[4], u32 block1[4], u32 block2[4], u32 block3[4], const u32 block_len, const u32 append[4])
 {
   u32 tmp0;
   u32 tmp1;
@@ -338,7 +338,7 @@ void memcat16_x80 (u32 block0[4], u32 block1[4], u32 block2[4], u32 block3[4], c
   }
 }
 
-void memcat8 (u32 block0[4], u32 block1[4], u32 block2[4], u32 block3[4], const u32 block_len, const u32 append[2])
+static void memcat8 (u32 block0[4], u32 block1[4], u32 block2[4], u32 block3[4], const u32 block_len, const u32 append[2])
 {
   u32 tmp0;
   u32 tmp1;
@@ -430,7 +430,7 @@ void memcat8 (u32 block0[4], u32 block1[4], u32 block2[4], u32 block3[4], const
   }
 }
 
-void append_sign (u32 block0[4], u32 block1[4], const u32 block_len)
+static void append_sign (u32 block0[4], u32 block1[4], const u32 block_len)
 {
   switch (block_len)
   {
@@ -512,7 +512,7 @@ void append_sign (u32 block0[4], u32 block1[4], const u32 block_len)
   }
 }
 
-void append_1st (u32 block0[4], u32 block1[4], u32 block2[4], u32 block3[4], const u32 block_len, const u32 append)
+static void append_1st (u32 block0[4], u32 block1[4], u32 block2[4], u32 block3[4], const u32 block_len, const u32 append)
 {
   switch (block_len)
   {